a(n) = Sum_{m=1..n} A000045(m)*(A004001(m+1) - 2*A004001(m) + A004001(m-1)).

Terms

a(0) =-1a(1) =0a(2) =-2a(3) =1a(4) =1a(5) =-7a(6) =-7a(7) =14a(8) =14a(9) =14a(10) =-75a(11) =69a(12) =-164a(13) =-164a(14) =-164a(15) =823a(16) =823a(17) =823a(18) =823a(19) =-5942a(20) =5004a(21) =5004a(22) =-23653a(23) =22715a(24) =-52310a(25) =-52310a(26) =144108a(27) =-173703a(28) =-173703a(29) =-173703